Pressure device for woodworking-machines.



No. 704,147 Patented July 8, 1902. J. R. THGMAS.

PRESSURE DEVICE FOR WOODWDRKING MACHINES.

(Application filed Dec 23, 1901.)

(No Model.)

\Nxmcsses UNITED STATES PATENT OFFICE.

JOHN R. THOMAS, OF CINCINNATI, OHIO, ASSIGNOR TO J. A. FAY & EGAN COMPANY, OF CINCINNATI, OHIO, A CORPORATION OF WVEST VIRGINIA.

PRESSURE DEVICE FOR WOODWORKlNG-MACHINES.

SPECIFICATION forming part of Letters Patent No. 704,147, dated July 8, 1902.

Original application filed May 29,1901, Serial No. 62,413. Divided and this application filed December 23, 1901. Serial No. 87,020- (No model.)

To all whom, it may concern:

Be it known that I, JOHN R. THOMAS, a citizen of the United States, residing at Cincinnati, in the county of Hamilton and State of Ohio, have invented certain new and useful Improvements in Pressure Devices for Voodworking-Machines, of which the following is a specification.

This application is a division of my applito cation for patent on improvementin moldingmachine filed May29, 1901, Serial No. 62,413.

It is the object of my invention to provide new and improved pressure devices above the cutter-heads of woodworking machinery; and

i my invention consists in mounting a pressure device of the character described on a frame in such manner that the same may be swung out of the way of the cutter-head for exposing the latter and providing the swinging frame with a plurality of pressure-feet separately yielding, so that different thicknesses of stock maybe fed through the machine side by side over the cutter-head, and, further, in the parts and in the construction, arrangement, and combinations of parts herein more fully described and claimed.

In the drawings, Figure 1 is a side elevation of my improved device shown in connection with so much of a woodworking-machine as is advisable to illustrate my invention. Fig. 2 is a transverse section of so much of a woodworking-machine as is advisable to show my invention and showing my improved device in side elevation. Fig. 3 is a plan view of my improved device. Fig. 4c is a side elevation of the same, partly broken away for better illustration ofparts and indicatingthe swinging frame in raised position in dotted lines; and Fig. 5 is adetail in plan view indicating the cutter-head and adjacent table-lips.

A represents the frame of the machine, in which the lower cutter-head B may be suitably mounted. Ihave shown the same journaled in a yoke C on a saddle D, the latter being vertically adjustable with relation to the frame. I have shown a feeding-in table E, adjustable up and down by means of an adj usting-screw e, and a table F after the cuttor-head, with the respective tables provided with lips e f, adjustable to and from the cutter-head, as by means of screws e f, taking through slots e f in the lips into the tableframes. The table-frames may be collectively adjustable up and down. The saddle has posts 1, taking into sockets 2 on the frameadjusting screws 3, collared to lugs or caps 4, extending from the sockets, the adjustingsorews screwing into the posts and adapted to raise and lower the same and the saddle with its cutter-head. A swinging frame 11 is pivoted on a bolt 12, taking into ears 13 on the plate let, secured to the frame and having lugs 15 extending therefrom. The swinging frame has a shank 16 and a socket or sockets 17. The shank 16 takes and has a snug fit between the lugs 15. A link 18 swings about a bolt 19 on one of the lugs and has a slot 20 taking about a bolt 21 in the other lug. The link 18 fits snugly above the shank 16 when the swinging frame 11 is in depressed or normal position, and the bolts 19 and 21, with the link 18, hold the swinging frame securely in depressed position. Each of the sockets 17 has a bore 26 for receiving a shank 27 of a pressure-foot 28. At its upper end the socket has an internally-threaded bore 31 for receiving a bolt 32. Abolt 33 takes slidably through the bolt 32 and is screwed into the top of the pressure-foot shank 27. A spring 34 is received by a pocket 35 and takes between the upper face of the pressure-foot shank 27 and the lower face of the bolt 32. The bolt 32 by its adjustment serves to regulate the tension of the spring. The bolt 33 by its adjustment serves to regulate the downward limit of the pressure-foot 28. Each pressure-foot has an upwardly-inolined face 36 at its lower feeding-in end. There are preferably a plurality of sockets 17 side by side on a swinging frame in order that separate pressure may be given to a plurality of strips of different thicknesses passing through the machine side by side or the combined pressure of a plurality of the pressure-feet be exerted upon a wider strip. 5

These pressure-feet serve to hold the stock firmly against the action of the lower cutterhead. If it is desired to reach the lower cutter-head from above or to adjust the lip adjacent thereto, the link 18 may be turned 10o aside and the swinging frame 11 raised upwardly and swung back, thereby exposing the lower cutter-head or adjacent parts and permitting ready access thereto. I have shown the swinging frame 11 pivoted to the machineframe to one side of the table,with the swinging frame overhanging and freely suspended over the table and the pivot and fastening device for the swinging frame located to one side of the table.

I claim 1. In woodworking machinery, the combination with amachine-frame, and a cutter-- head therefor, of a pressure device comprising in combination a swinging frame projecting sidewardly over the cutter-head, a plurality of separately-yielding pressure-feet side by side in the swingingframe, and means for securing the swinging frame rigidly in place, substantially as described.

2. In woodworking machinery, the combination with a machine-frame, a work-supporting table therefor, and a cutter-head, of a pressure device comprising in combination a swinging frame pivoted with relation to the machine-frame to one side of the table and freely overhanging the cutter-head, with a plurality of separately-yielding pressure-feet side by side in the swinging frame, and a fastening device for securing the swinging frame against upward movement to the same side of the table as the pivot, substantially as described.

3. In woodworking machinery, the combination of apressure device above the cutterhead comprisinga swinging frame, a plurality of sockets in the frame, pressure-feet taking into the sockets, springs taking against the pressu re-feet for resisting their upward movement, with the swinging frame constructed and arranged forbeing raised upwardly away from the cutter head, substantially as described.

4. In a pressure device for woodworking machinery, the combination of a machineframe, a cutter-head therefor, a swinging frame extending above the cutter-head and pivoted to the main frame, sockets for the swinging frame above the cutter-head, pressure-feet having shanks taking into and sliding in the sockets from their lower ends, bolts screwing into the sockets from their upper ends, springs interposed between the shanks and bolts for forcing the pressurefeet downwardly, and additional bolts taking slidably through the first-named bolts and screwing into theshanks of the pressurefeet for adjustably limiting the downward movement of the pressure-feet, with means for rigidly holding the swinging frame above the cutter-head and arranged for releasing the swinging frame and permitting the same to be swung upwardly away from the cutterhead, substantially as described.

5. In a woodworking-machine, the combination of a main frame, a cutter-head, a plate for the frame, ears extending therefrom, a swinging frame pivoted to the plate and arranged to take snugly between the ears, a link for rigidly holding down the swinging frame between the ears, sockets for the swinging frame extending above the cutter-head, pressure-feet having shanks taking into the sockets, bolts for the shanks, and springs taking between the shanks and bolts, and arranged for permitting the swinging frame to be raised away from the cutter-head, substantially as described.

In testimony whereof I have signed my name hereto in the presence of two subscribing witnesses.

JOHN R. THOMAS.

Witnesses:

PARKE S. JOHNSON, WILLIAM H. MGMILLAN. 

